Red Hat Certified System Administrator (RHCSA) (EX200) Exam Guide

1. Access a shell prompt and issue commands with correct syntax
2. Use input-output redirection (>, >>, |, 2>, etc.)
3. Use grep and regular expressions to analyze text
4. Access remote systems using SSH
5. Log in and switch users in multi-user targets
6. Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2
7. Create and edit text files
8. Create, delete, copy, and move files and directories
9. Create hard and soft links
10. List, set, and change standard ugo/rwx permissions
11. Locate, read, and use system documentation including man, info, and files in /usr/share/doc

1. Configure access to RPM repositories
2. Install and remove RPM software packages
3. Configure access to Flatpak repositories
4. Install and remove Flatpak software packages

1. Conditionally execute code (use of: if, test, [], etc.)
2. Use Looping constructs (for, etc.) to process file, command line input
3. Process script inputs ($1, $2, etc.)
4. Processing output of shell commands within a script

Example scenario: Write a script that takes a username as its first argument and prints whether that user exists.

1. Boot, reboot, and shut down a system normally
2. Boot systems into different targets manually
3. Interrupt the boot process in order to gain access to a system
4. Identify CPU/memory intensive processes and kill processes
5. Adjust process scheduling
6. Manage tuning profiles
7. Locate and interpret system log files and journals
8. Preserve system journals
9. Start, stop, and check the status of network services
10. Securely transfer files between systems

Example scenario: You inherit a server with an unknown root password. How would you reset it from the boot menu?

1. List, create, and delete partitions on GPT disks
2. Create and remove physical volumes
3. Assign physical volumes to volume groups
4. Create and delete logical volumes
5. Configure systems to mount file systems at boot by universally unique ID (UUID) or label
6. Add new partitions and logical volumes, and swap to a system non-destructively

1. Create, mount, unmount, and use VFAT, ext4, and XFS file systems
2. Mount and unmount network file systems using NFS
3. Configure autofs
4. Extend existing logical volumes
5. Diagnose and correct file permission problems

Example scenario: Users need a share mounted automatically under /shared only when they open it. What would you configure?

1. Schedule tasks using at, cron and systemd timer units
2. Start and stop services and configure services to start automatically at boot
3. Configure systems to boot into a specific target automatically
4. Configure time service clients
5. Install and update software packages from Red Hat Content Delivery Network, a remote repository, or from the local file system
6. Modify the system bootloader

1. Configure IPv4 and IPv6 addresses
2. Configure hostname resolution
3. Configure network services to start automatically at boot
4. Restrict network access using firewalld and firewall-cmd

1. Create, delete, and modify local user accounts
2. Change passwords and adjust password aging for local user accounts
3. Create, delete, and modify local groups and group memberships
4. Configure privileged access

1. Configure firewall settings using firewall-cmd/firewalld
2. Manage default file permissions
3. Configure key-based authentication for SSH
4. Set enforcing and permissive modes for SELinux
5. List and identify SELinux file and process context
6. Restore default file contexts
7. Manage SELinux port labels
8. Use Boolean settings to modify system SELinux settings

Example scenario: A web server runs on port 8081 but connections fail while SELinux is enforcing. What would you check and change?